Sash-lock.



H. FOEBSTER.

, -SASH LOOK.

v I APPLIGATION FILED MAX 1, 191:4. 1,126,969. Patented Feb. 2, 1915 2 SHEETS-SHEET 1.

Wi memy 5911 611132/ H, FQERSTER.

I SASH. LOCK.

APPLIGATION FILED MAY 1, 1914.

' 1,12 ,9g9, Patented FebQ2, 1915.

2 SHEETS-SHEET 2.

Smi h NT narro nanny Fonnsrnn, or crimson, trimm BASH-LOCK Application filed May 1, 19m. serial No. aeaeie.

To all whom it may concern Be it known that I, HENRY Fonus'r'sa, c tizen of the United States, residing at Chicago, in the county of Cook and State of lllinois, have invented certain neiv and useful Improvements in Sash-Locks; and I do hereby declare the following to be a full, clear, and exact description" of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in sash locks and has for-its object to provide a sash lock which will answer a pluralityof purposes, namely. to lock sashes against relative opening movement, to limit the relative opening movement of said sashes, and to draw the'meeting rails of the sashes toward each other during the locking operation;

The invention consists in the features of construction and combinations of parts hereinafter fully described and particularly claimed. 1

-:of the upper and lower In the accompanying drawings illustrating the invention:

Figure -1 is a frag-v mentary 'vi'ew of the meeting rail portions sashes of a window equipped with a sash lock embodying my invention. Fig. -2- is a vertical trans:

verse section on th'e'line 2-2 of Fig. -1-.

Fig. -3- is a'top plan view of the meeting rails lock embodying my invention.

of the sashes. equipped with a sash Fig. -4

is a: vertical section through the meeting rails of'the sashes showing the same separated as when one orother of the sash is moved to open position, and shows the sash lock embodying my invention in elevation.

The particular objects are, first, to provide .a sash lock which, besides affording [an 'efiicient lock to prevent relative opening movement of the sashes will, during the operation thereof, lock said sashes and vdraw the meeting rails thereof" together to form an air tight ijoint. A further object of the invention is to provide a sash lock equipped with a suitable means relative opening movement sashes will automatically lock said sashes against reopening without first manipulating the lock.

Other objects of the invention willap- I Specification of Letters Patent.

of my invention Patented Feb. 2 1915..

pear from the following description of the-" same.

My sa d sash lock comprises a housing 1 mounted upon the upper rail 2 of the lower sash of a window, and which is provided with side flanges 3 through which the fastening screws 4: pass. Said. housing is substantially semi-cylindrical along its top wall, and isprovided in its end walls" with openings through which "the bolt or plunger 5 and its shank 6 are adapted tomo've longitudinally and rotativ'*ely; said openings being substantially"concentric with the top wall of the housingh The shank (i is of smaller diameter than the bolt or plunger 5 so that at the juncture of said parts-an an nular shoulder 7 is-provided against which o'ne end of the compression spring 8 bears, the latter hearing at its other end against the opposing end wall of the housing 6.

The said spring 8 maintains thebolt or plunger 5 normally projected, the same being adapted to be drawn inwardly against substantially an eccentric, that is to say,

said flange is substantially anniilar 'andvof larger diameter than the bolt orplungerjf') so as to be flush with the circumferential face of the latter at one point and project correspondingly farther' 'outw.ardly there from at a diametrically oppositepointg'f; 1

Mounted upon the lower r'ailf13; of then};- per sash is a socket memberl iadapted' to be engaged by said bolt or plunger said member comprising a base'15 perforated for the passage of screws 'l ti fo'r' nouiit ingth'e same on the rail 13 and having an upwardly extending edge flange 17 along-its rear edge and parallel with the pane of glass 18 mounted in said sash. The said flanged? carries an overhanging flange 19 at itslufp} per edge; the same having an inclined surface 20 and being provided with a recess 2} opposing the base 15 whereby a lip 22 is provided which is adapted to be engaged Side flanges \inte' ral ;.with the flange 15 and the side e ges'of the flange :"I? serve "to reinforce the structure.

The flange 12 of the bolt -or plunger 5 projects farthest outwardly from the latter in a direction diametrically opposite to the direction of projection of the thumb piece 9 so that. as the latter is turned while in engagement with the cam .face 10 of the flange'll the said flange 12' will pass up wardly intothe recess 21 and into engagement with the lip 22, and as the rotary movement of the bolt or plunger is continued during engagement of said thumb piece 9 with'the cam surface 10 the bolt or plunger will be drawninwardly. against the action of the spring 8 'and will draw the said member 14 in the same direction, thus obviously causing the rails 2 and 13 to move toward each other. 5 normally projects beyond the meeting face of the rail 2 and into the path of the upper rail of the upper sash (not shown) but may is so disposed as to cause said arm to ing the same farther outwardly in the same direction and then turning the same back to the position shown in Fig. 2, the said flange 12 will engage in the recess 24' between the lip 23 and the inner end wall of the housing 1 and. will engage said lip to prevent return of the bolt or plunger 5 to the position shown in Figs."2, -3- and 4 Mounted upon the lower rail 13 of the upper sash laterally of the member 14 is p a bearing member 25 having parallel "erti cal flanges 26 between which an arm 27 is pivotally mounted, said arm being provided with a small longitudinal slot 28' through which the pin 29 mounted in said flanges 26 passes. Said arm 27 may be of anydesire'd length and is provided with a longitud nal slot 30 extending almost the entire length thereof, and through which the bolt or 0 passes. Said bearing memben25 swing between the member 14 and the housing 1. The said slot 30 in said arm is laterally enplunger larged as at 31, adjacent to its pivotal connection with the member 2-5 to permit the passage of the flange 12 therethrough so that said bolt or plunger 5 may be drawn into and out of engagement with said arm at will when the sash rails 2 and 13 are in opposed position as shown in Fig. -2. In opening the window it 1s. of course primarily necessary to turn the bolt '01- plunger so The said bolt or plunger to the lower edge of said sired not to use the arm 27 obviously be turned to a position entirely, out of the path of\ and out of engaging rela--- It will be obvious from as to disengage the flange 12 from the lip 22and t1ien,withdrawthesaid bolt or plun.- ger so that the cfiange"12 lies between the. lip 22- and the arm 27. 1 During outward-move ment of they flange 12 the same will engage the opposing face of the arm 27. 'By now raising the lower'sa'sh or lowering the upper sash the bolt or plun er 5 will pass f-into a narrower portion of 51c slot 30'toward the free end, of'said' arm 27 and when-engaged with the outer end wall :of said slot limit the opening :movement of the-sash. The bolt or plunger 5 ma rails 2 and 13 o the sashes are-disposed in the position shown in, Fig. 4, occupy the-position shown in the last-named figure, or in Fig. --'2. i n. either event the in;

. clined surface'2Q of themember 14 will lie" in the path of the outer end of said bolt or plunger so that upon returning the sashes to relative closed position the same will be forced by said'inclined surface 20 inwardly against the action of the spring 8 and will thus, if in the position shown in Fig. 4 pass the lip 22 and spring into engaging relation lip, thereby locking the sashes against reopening except by againmanually moving the bolt or against the action of said spring 8.

If, it'is desired to open the window wide or to a greater extent than permitted by the arm 27, the bolt or plunger is first turned to the position shown in Fi 4-, and drawn outwardly until the ange 12 has passed the lip 22, after which it may be freely drawn farther outwardly in the same;

direction until said flange 12 has passed through the enlarged portion 31 of the slot 30 in said arm 27 and until the flange 12 strikes the inner end wall of the housing 1, whereupon it is shown in dotted lines in Fig. 2, leaving the said flange 12 in outward' engagementwith the lip 23. The window may be now opened wide and in the event that it is dethe latter may tion to said bolt orplunger 5.

the foregoing that the lock may be used independently of or in conjunction with the arm 27 without afi'ecting its efiiciency as a look. When used in conjunction with the arm 27 my device has the further advantage of limiting the opening movement of the sashes to an extent sufficient for purposes of ventilation, but insuflicient to permit the passage through the opening of the body of a man.

I claim as m invention: 1 Y

1. A sash-loo comprising a housing and a socket member mounted respectively on the meeting rails of two window sashes, a

spring pressed plunger rotatably and reciorocablv mounted in said housing and plunger I when the meeting a returned to the position -adapted to engage atone end in said socket member, a thumb-piece on the other end of said plunger, an external cam-surface on [the housing adapted to be engaged by said thumb-piece for imparting longitudinal movement to. said plunger against the action of said spring when rot'atedlin one direction,

aneccentric flange on the socket engaging end of said plunger, an overhanging lip -re'ciprocably mounted in said'housin on the socket-member adapted to be engaged by said flange as said plunger is rotated in the direction aforesaid, and an overhanging lip'on said housing for, engaging lock the window sashes against relative movemenuan arm pivotally mounted contiguous to said socket memberonthe .rail

carrying the same and adapted to he swung in a plane between the opposing faces of said housing and, said socket member, there bein a longitudinal slot in said [am in whic said plungeris adaptedto' engage to limit the relative opening movement of said 3. 'A .sash lock; comprising .a housing and a socket member mounted on the respective meeting-ralls-of two window sashes, a menu:

ally operable spring pressed plunger recip rocably mounted in said housing and adapted to engage in saidjsocket member to-lock the window sashes against relative movement, an, arm pivotally mounted contiguous to said socket member on the rail carryinc.

ingthe'same and adapted to be swung said plane between the opposing faces 0 relative opening movement of said sashes, a flange at the socket engaging end of said plunger adapted to engage one face of said arm as said plunger is withdrawp from said and said socket member, there being a 1011-- 'gitudinal slot in said arm in which said socket for preventing the same from being withdrawn from engagement withsaid arm. 4, A sash lock comprising a hpusing and housing and said socket member, there being a longitudinal slot insa'id arm in which said plunger is adapted to engage to limit the/5o a socket membermounted on the respective meeting rails of two window sashes, a manually operable spring'press ed plunger reciprocably" mounted. in said housing and adapted to engage in said socket member to lock the windowfsashes against relative move-- ment, an arm pivotally' mounted contiguous to said socket member on the rail carrying the same and adapted to be swung in a plane between the opposing faces of said housing plunger is'adapted to engage to limit the relative opening movement of said sashes,

said slot in said arm laterally enlarged at one point to permit passage of said flanged end of said plunger therethrough, said plun-" ger rotatable to cause said flange toregister with the enlarged portion ofsaid slot for disengaging the plunger from said arm and the latter adapted to be swung out'of engaged relation to said plunger when the latter is withdrawn from engagement in said slot, said plunger adapted to engage in said socketmember after said arm is disposed out of engaging relation to said plunger.

In testimony whereof I have signed my name in presence of. two subscribing Wit-.

nesse's. 5

. I .HENRY 'FOERSTER.

Witnesses: ALBERT Sonnmmi, M. M. BOYLE. 

